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KRONİK HEMODİYALİZ HASTALARINDA ARTERİYAL SERTLİĞİN DEĞERLENDİRİLMESİ VE İLİŞKİLİ RİSK FAKTÖRLERİ

EVALUATION ARTERIAL STIFFNESS IN CHRONIC HEMODIALYSIS PATIENTS AND THE RELATED RISK FACTORS.

Journal Name:

  • Selçuk Tıp Dergisi

Publication Year:

  • 2009

Key Words:

Keywords (Original Language):

Author NameUniversity of Author
Abstract (2. Language): 
Aim: Pulse wave velocity (PWV) and augmentation index (AI) are indicators of arterial stiffness and non invasive methods of detecting the severity of vascular injury. This study included large sample size and evaluated PWV and AI in chronic hemodialysis (HD) patients to detect the related risk factors. Method: 881 patients on chronic HD program (44% females) were included in this study. PWV and AI of the patients measured by single operator using pulse wave analysis device (Sphygmocor). Pulse wave was measured from carotid-radial distance. Aortic AI was obtained from aortic pulse wave forms derived from radial artery .for all patients, left ventricular geometry was evaluated by echocardiography and volume status was evaluated by bioimpedence device. Results: The average PWV in patient group was 10.0± 2.5 m/s, average AI was 27±11%. AI -HR75, the heart rate corrected form at 75 beat/minute of AI was found to be 29±11%. PWV and AI were found above limit value in 29% and 67% of the patients respectively. A positive relation was found between PWV and AI. when patients with high and normal AI were compared, albumin values were lower while average blood pressure values, cardiothoracic ratio(CTR) were higher and ejection time longer in patients with high AI. AI had a negative relation with height and weight. AI 75 was also negatively related to height and weight. In patients with high AI75more patients had left ventricular hypertrofy (LVH). Male patients percentage and average blood pressure was higher in patients with high PWV. In the analysis of PWV of the subgroup (n:408 patients), evident interdialytic weight increase was present in the group with PWV of ≥ 11.5 m/ sc compared to the group of < 8.5 m/sc. Conclusion: measures that can be used to evaluate vascular stiffness like PWV and AI are related to average arterial blood pressure, cardiothoracic ratio, hypoalbuminemia, interdialytic weight increase. We think that the relation between these parameters and cardiovascular morbidity and mortality will become clear in the follow up of our hemodialysis patients
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Abstract (Original Language): 
Amaç: Arteryel sertliğin göstergelerinden olan nabız dalga hızı (NDH) ve artırma göstergesi (AG), vasküler hasarın şiddetini belirlemede kullanılan invaziv olmayan yöntemlerdir. Geniş hasta sayısı içeren bu çalışmada, kronik HD hastalarında NDH ve AG değerlendirilerek, ilişkili olduğu risk faktörlerinin belirlenmesi amaçlandı. Yöntem: Kronik HD programında olan toplam 881 hasta (%44’ü kadın) çalışmaya dahil edildi. Hastaların NDH ve AG ölçümleri nabız dalga analizi cihazı (Sphygmocor) kullanılarak, tek operatör tarafından yapıldı. NDH analizi karotid-radyal mesafeden ölçüldü. Aortik AG radyal arterden derive edilen aortik nabız dalga formlarından elde edildi. Tüm hastaların ekokardiyografi ile sol ventrikül geometrisi ve bioimpedens cihazıyla volüm durumu değerlendirildi. Bulgular: Hasta grubunun ortalama NDH değeri 10.0 ±2.5 m/s, ortalama AG % 27±11 idi. AG’nin kalp hızı ile düzeltilmiş şekli olan AG -KH75 ise %29±11 olarak saptandı. NDH hastaların %29’da, AG ise %67’de sınır değerin üstünde bulundu. AG ve NDH arasında pozitif ilişki saptandı. AG yüksek ve normal olan hastalar karşılaştırıldığında; AG yüksek olan grupta, albumin değerleri daha düşük, ortalama kan basıncı değerleri, kardiyotorasik oranları (KTO) daha yüksek ve ejeksiyon süreleri daha uzun saptandı. AG boy ve kilo negatif ilişkili idi. AG 75 kilo ve boy ile negatif ilişkiliydi. AG 75 yüksek olanlarda, sol ventrikül hipertrofili (LVH ) hasta oranı daha çoktu. NDH değeri yüksek olan grupta erkek hasta oranı ve ortalama kan basıncı değerleri yüksek bulundu. Alt grup analizinde (n:408 hasta) NDH değeri ≥ 11. 5 m/sn olan grupta, < 8. 5 m/sn olana göre belirgin artmış interdiyalitik ağırlık artışı vardı. Sonuç: Hemodiyaliz hastalarında, NDH ve AG gibi damar sertliğinin göstergesi olabilecek ölçümler, ortalama arter kan basıncı, kardiyotorasik oran, hipoalbuminemi, interdiyalitik ağırlık artışı ile ilişkiliydi. Bu parametrelerin kardiyovasküler morbidite ve mortalite ile ilişkisi hemodiyaliz hasta topluluğumuzun takipleri sırasında açıklık kazacağını düşünüyoruz.
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